<template>
  <div :class="className" :style="{ height: height, width: width }" />
</template>

<script>
import echarts from "echarts";
require("echarts/theme/macarons"); // echarts theme
import resize from "./mixins/resize";

export default {
  mixins: [resize],
  props: {
    className: {
      type: String,
      default: "chart",
    },
    width: {
      type: String,
      default: "100%",
    },
    height: {
      type: String,
      default: "350px",
    },
    autoResize: {
      type: Boolean,
      default: true,
    },
    chartData: {
      type: Object,
      required: true,
    },
  },
  data() {
    return {
      chart: null,
    };
  },
  watch: {
    chartData: {
      deep: true,
      handler(val) {
        this.setOptions(val);
      },
    },
  },
  mounted() {
    this.$nextTick(() => {
      this.initChart();
    });
  },
  beforeDestroy() {
    if (!this.chart) {
      return;
    }
    this.chart.dispose();
    this.chart = null;
  },
  methods: {
    initChart() {
      this.chart = echarts.init(this.$el, "macarons");
      // this.setOptions(this.chartData);
    },
    setOptions(obj) {
      this.chart.setOption({
        grid: {
          left: 10,
          right: 40,
          bottom: 20,
          top: 30,
          containLabel: true,
        },
        tooltip: {
          trigger: "axis",
        },
        toolbox: {
          show: true,
          feature: {
            dataView: { show: true, readOnly: false },
            magicType: { show: true, type: ["line", "bar"] },
            restore: { show: true },
            saveAsImage: { show: true },
          },
        },
        xAxis: {
          data: obj.month,
          type: "category",
          boundaryGap: false, // 坐标轴两边留白策略，

          axisTick: {
            show: false,
          },
          axisLine: {
            symbol: ["none", "arrow"],
            symbolOffset: 10,
          },
        },
        yAxis: [
          {
            name: "文章总数",
            nameTextStyle: { align: "left" },
            minInterval: 1,
            type: "value",
            axisTick: {
              show: false,
            },
            axisLine: {
              symbol: ["none", "arrow"],
              symbolOffset: 10,
            },
          },
        ],

        series: [
          {
            name: "文章总数",
            itemStyle: {
              normal: {
                color: "#FF005A",
                lineStyle: {
                  color: "#FF005A",
                  width: 2,
                },
              },
            },
            smooth: true,
            type: "line",
            data: obj.num,
            animationDuration: 2800,
          },
        ],
      });
    },
  },
};
</script>
